<template>
  <div class="login">
    <el-form v-show="isLogin" ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">统一登陆页面</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>

      <el-form-item prop="code" v-if="captchaOnOff">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon"/>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>

    <div v-show="!isLogin">
      <span>您已经登陆 </span>
      <el-button
        :loading="loading"
        size="mini"
        type="primary"
        style="width:40%;"
        @click.native.prevent="handleLogout"
      >
        <span>退出按钮 </span>
      </el-button>
      <div class="el-login-footer">
        <span>Copyright © 2018-2022 ruoyi.vip All Rights Reserved.</span>
      </div>
    </div>
  </div>

</template>

<script>
  import {checkSsoLogin, getCodeImg} from '@/api/login'
  import Cookies from 'js-cookie'
  import {decrypt, encrypt} from '@/utils/jsencrypt'

  export default {
    name: 'ssoLogin',
    data() {
      return {
        isLogin: true,
        codeUrl: '',
        loginForm: {
          username: 'admin',
          password: '123456',
          rememberMe: false,
          code: '',
          uuid: '',
          redirectUri: '',
          appId: ''
        },
        loginRules: {
          username: [
            {required: true, trigger: 'blur', message: '请输入您的账号'}
          ],
          password: [
            {required: true, trigger: 'blur', message: '请输入您的密码'}
          ],
          code: [{required: true, trigger: 'change', message: '请输入验证码'}]
        },
        loading: false,
        // 验证码开关
        captchaOnOff: true,
        // 注册开关
        register: false,
        redirect: undefined
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    mounted: function () {
      document.title = '统一登录页面'
    },
    created() {
      this.checkLogin()
      this.getCode()
      this.getCookie()
    },
    methods: {
      checkLogin() {
        //获取url跳转参数
        let urlSearchParams = new URLSearchParams(window.location.search)
        let redirectUri = urlSearchParams.get('redirectUri')
        let appId = urlSearchParams.get('appId')
        checkSsoLogin(redirectUri, appId).then((res) => {
          if (res.data.statusCode === 200) {
            this.isLogin = false
            window.open(redirectUri + '?code=' + res.data.code, '_blank')
          }
        }).catch(() => {

        })
      },
      getCode() {
        getCodeImg().then(res => {
          this.captchaOnOff = res.captchaOnOff === undefined ? true : res.captchaOnOff
          if (this.captchaOnOff) {
            this.codeUrl = 'data:image/gif;base64,' + res.img
            this.loginForm.uuid = res.uuid
          }
        })
      },
      getCookie() {
        const username = Cookies.get('username')
        const password = Cookies.get('password')
        const rememberMe = Cookies.get('rememberMe')
        this.loginForm = {
          username: username === undefined ? this.loginForm.username : username,
          password: password === undefined ? this.loginForm.password : decrypt(password),
          rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
        }
      },
      handleLogin() {
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true
            if (this.loginForm.rememberMe) {
              Cookies.set('username', this.loginForm.username, {expires: 30})
              Cookies.set('password', encrypt(this.loginForm.password), {expires: 30})
              Cookies.set('rememberMe', this.loginForm.rememberMe, {expires: 30})
            } else {
              Cookies.remove('username')
              Cookies.remove('password')
              Cookies.remove('rememberMe')
            }
            //获取url跳转参数
            let urlSearchParams = new URLSearchParams(window.location.search)
            this.loginForm.redirectUri = urlSearchParams.get('redirectUri')
            this.loginForm.appId = urlSearchParams.get('appId')
            this.$store.dispatch('ssoLogin', this.loginForm).then(() => {
            }).catch(() => {
              this.loading = false
              if (this.captchaOnOff) {
                this.getCode()
              }
            })
          }
        })
      },
      /** 退出按钮操作 */
      handleLogout() {
        this.$store.dispatch('ssoLogOut').then(() => {
          window.reload()
        })
      }
    }
  }
</script>

<style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-image: url("../assets/images/login-background.jpg");
    background-size: cover;
  }

  .title {
    margin: 0px auto 30px auto;
    text-align: center;
    color: #707070;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    padding: 25px 25px 5px 25px;

    .el-input {
      height: 38px;

      input {
        height: 38px;
      }
    }

    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 2px;
    }
  }

  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }

  .login-code {
    width: 33%;
    height: 38px;
    float: right;

    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }

  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }

  .login-code-img {
    height: 38px;
  }
</style>
